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一直以来,在科学界中争论最激烈的就是与天体生物学有关的问题:生命到底是如何开始的?我们希望在别的世界中找到怎样形式的生命?当我们发现在其它星球上有生命迹象的时候,我们怎样才能确切地看到?类似地球上的复杂生命在银河系中是普遍存在,还是绝无仅有?
The most heated debate in the scientific community has always been related to astrobiology: how does life begin? What kind of life do we expect to find in other worlds? When we find signs of life on other planets How can we see exactly when we see it? Is a complex life similar to Earth ubiquitous or unique in the Milky Way?